A steering-column-mounted electronic shifter and shifting system

Abstract

The present invention relates to a steering column-mounted electronic shifter and a shifting system, which are used to reduce the overall cost of the steering column-mounted electronic shifter, improve the functional safety level of the shifting system, and realize the recognition of the driver's shifting intention. The steering column-mounted electronic shifter includes: a housing assembly, a steering column-mounted operating assembly, a P gear button assembly, and a main PCB board; a part of the steering column-mounted operating assembly extends into the housing assembly through an opening arranged on one side of the housing assembly, and the main PCB board is arranged inside the housing assembly; the P gear button assembly is arranged on the steering column-mounted operating assembly, and when the P gear button assembly is triggered, it sends multiple groups of P gear request signals to the vehicle controller; a plurality of dual-channel grating sensors are arranged on the main PCB board, and when the steering column-mounted operating assembly performs a shifting operation, it cuts the infrared rays between the emitter and the receiver of the plurality of dual-channel grating sensors, so that the dual output channels of the plurality of dual-channel grating sensors sequentially output level change signals representing the driver's shifting intention to the vehicle controller.

Description

Technical Field

[0001] The present invention belongs to automotive components, and particularly relates to a steering column-mounted electronic shifter and a shifting system. Background Art

[0002] With the development of electronic shifters, there are various types of electronic shifters. Among them, the lever-type and knob-type electronic shifters occupy most of the market. However, in recent years, with the major vehicle manufacturers' control of the vehicle layout space and cost, the steering column-mounted electronic shifter has received more and more favor. The steering column-mounted electronic shifter can not only save the layout space of the center console, but also has the advantages of small size and low cost.

[0003] At present, most of the steering column-mounted electronic shifters on the market utilize the Hall effect. The MCU processing chip integrated on the main PCB board of the shifter collects and processes the signals output by the Hall component circuit, and realizes signal interaction with the vehicle through the CAN transceiver. The steering column-mounted electronic shifter adopting the above principle has a complex structure, and the shifting system architecture also has the disadvantages of high material cost and high R & D cost. Summary of the Invention

[0004] Embodiments of the present invention provide a steering column-mounted electronic shifter and a shifting system architecture, which are used to reduce the overall cost of the steering column-mounted electronic shifter, improve the functional safety level of the shifting system, and realize the recognition of the driver's shifting intention.

[0005] The technical solution of the present invention is as follows:

[0006] Embodiments of the present invention provide a steering column-mounted electronic shifter, including: a housing assembly, a steering column-mounted operating assembly, a P gear button assembly, and a main PCB board; a part of the steering column-mounted operating assembly penetrates through an opening arranged on one side of the housing assembly and extends into its interior, and the main PCB board is arranged inside the housing assembly and is located below the part of the steering column-mounted operating assembly extending into the housing assembly;

[0007] The P gear button assembly is arranged on the steering column-mounted operating assembly, and when the P gear button assembly is triggered, it sends multiple groups of P gear request signals to the vehicle controller;

[0008] Wherein, a main dual-channel grating sensor and a redundant dual-channel grating sensor are arranged on the main PCB board. When the steering column-mounted operating assembly performs a shifting operation, it cuts the infrared rays between the emitter and the receiver of the dual-channel grating sensor and the infrared rays between the emitter and the receiver of the redundant dual-channel grating sensor, so that the dual output channels of the dual-channel grating sensor successively output level change signals representing the driver's shifting intention to the vehicle controller, and the dual output channels of the redundant dual-channel grating sensor successively output level change signals representing the driver's shifting intention to the vehicle controller.

[0009] Preferably, the steering column shift control assembly includes:

[0010] An orbital body disposed on the other side of the housing assembly away from the opening;

[0011] A steering column shift lever, one end of which extends into the interior of the housing assembly through an opening disposed on one side of the housing assembly, and the steering column shift lever is rotatably disposed around a metal pin fixed in the housing assembly;

[0012] A gear position pin slidably assembled at one end of the steering column shift lever facing the orbital body;

[0013] A light shield fixedly assembled on the steering column shift lever and disposed facing the dual-channel grating sensor;

[0014] When the steering column shift lever performs a gear shifting operation, the steering column shift lever rotates around the metal pin, drives the gear position pin to slide along the orbital body, and drives the light shield to cut the infrared rays between the emitter and the receiver of the main dual-channel grating sensor and the infrared rays between the emitter and the receiver of the redundant dual-channel grating sensor.

[0015] Preferably, the gear position pin slides axially through a spring disposed inside one end of the steering column shift lever facing the orbital body; when the gear position pin slides along the orbital body with the steering column shift lever, the gear position pin is forced by the orbital body to extend into the steering column shift lever and compress the spring, and when the steering column shift lever is no longer being shifted, the gear position pin is reset due to the resilience of the spring;

[0016] A plurality of V-shaped gear position grooves corresponding one-to-one to the shifting operation stroke of the shifter are provided on one side of the orbital body facing the gear position pin.

[0017] Preferably, the housing assembly includes:

[0018] An upper housing, a middle housing, and a lower housing arranged and fixed in sequence;

[0019] The upper housing and the middle housing jointly enclose an opening and an internal space for the steering column shift lever to be inserted, the orbital body is fixed on the middle housing, and the metal pin is fixed between the upper housing and the lower housing;

[0020] The main PCB board is disposed between the middle housing and the lower housing and is pressed and fixed on the middle housing by the lower housing.

[0021] Preferably, the P gear button assembly includes:

[0022] A handle core, a part of which extends into the steering column shift lever;

[0023] An FPC board for connecting to a vehicle controller, which is arranged inside the handle core;

[0024] Conductive rubber, which is arranged inside the handle core;

[0025] A decorative ring, which is arranged between the handle core and the shift-by-wire handle;

[0026] A P gear button, part of which extends into the handle core, and when the P gear button is pressed, it triggers the conductive rubber to conduct the FPC board, so that the FPC board sends multiple groups of P gear request signals to the vehicle controller; when the P gear button is released, it returns to its original position by the resilience of the conductive rubber.

[0027] Preferably, when the shift-by-wire handle is switched from the current gear to the previous gear, the dual output channels of the main dual-channel grating sensor and the dual output channels of the redundant dual-channel grating sensor respectively output level change signals including low level, high level and low level to the vehicle controller in sequence, and the first output channel in the dual output channels sends out the level change signal before the second output channel;

[0028] When the shift-by-wire handle is switched from the current gear to the second previous gear, the dual output channels of the main dual-channel grating sensor and the dual output channels of the redundant dual-channel grating sensor respectively output level change signals including low level, high level, low level, high level and low level to the vehicle controller in sequence, and the first output channel in the dual output channels sends out the level change signal before the second output channel;

[0029] When the shift-by-wire handle is switched from the current gear to the next gear, the dual output channels of the main dual-channel grating sensor and the dual output channels of the redundant dual-channel grating sensor respectively output level change signals including low level, high level and low level to the vehicle controller in sequence, and the second output channel in the dual output channels sends out the level change signal before the first output channel;

[0030] When the shift-by-wire handle is switched from the current gear to the second next gear, the dual output channels of the main dual-channel grating sensor and the dual output channels of the redundant dual-channel grating sensor respectively output level change signals including low level, high level, low level, high level and low level to the vehicle controller in sequence, and the second output channel in the dual output channels sends out the level change signal before the first output channel.

[0031] Preferably, a guide groove is arranged on the inner wall of the handle core, and a guide rib assembled into the guide groove is arranged on the outer wall of the P gear button;

[0032] A boss and a protrusion for limiting the moving stroke of the P - gear button within the handle core are provided inside the handle core.

[0033] An embodiment of the present invention further provides a shifting system, including the above - mentioned column - shift electronic shifter, and further including: a vehicle controller, which is connected to the FPC board in the P - gear button assembly for obtaining multiple groups of P - gear request signals sent by the FPC board. The vehicle controller is also connected to the main PCB board for determining the driver's shifting intention based on the level change signals successively sent by the dual - output channels of the main dual - channel grating sensor on the main PCB board and the level change signals successively sent by the dual - output channels of the redundant dual - channel grating sensor on the main PCB board.

[0034] The beneficial effects of the present invention are as follows:

[0035] The integration of a processing chip on the main PCB board is cancelled, reducing the product cost. It can directly reduce the software development cost and functional safety development cost of the column - shift electronic shifter. In particular, the R / N / D gears can achieve the ASIL B functional safety goal, and the P - gear can achieve the ASIL C functional safety goal. Description of the Drawings

[0036] Figure 1 is a disassembled schematic diagram of the column - shift electronic shifter according to an embodiment of the present invention;

[0037] Figure 2 is a disassembled schematic diagram of the housing assembly and the main PCB board according to an embodiment of the present invention;

[0038] Figure 3 is a sectional schematic diagram of the column - shift operating assembly assembled in the housing according to an embodiment of the present invention;

[0039] Figure 4 is a schematic diagram of the light - shielding plate assembled on the column - shift handle according to an embodiment of the present invention;

[0040] Figure 5 is a schematic diagram of the P - gear button assembly assembled on the column - shift handle according to an embodiment of the present invention;

[0041] Figure 6 is a schematic diagram of the main PCB board according to an embodiment of the present invention;

[0042] Figure 7 is a schematic diagram of the dual - channel grating sensor according to an embodiment of the present invention;

[0043] Figure 8 is a schematic diagram of the traditional shifting system architecture;

[0044] Figure 9 is an architecture diagram of the shifting system according to an embodiment of the present invention;

[0045] In the figure, 1 - upper housing, 2 - rail body, 3 - gear position pin, 4 - spring, 5 - stalk shift handle, 6 - sun visor, 7 - middle housing, 8 - main PCB board, 9 - lower housing, 10 - metal pin, 11 - FPC board, 12 - conductive rubber, 13 - P - gear button, 14 - handle core, 15 - decorative ring, 16 - screw, 17 - main dual - channel grating sensor, 18 - redundant dual - channel grating sensor. Specific embodiments

[0046] The present invention provides a stalk shift - type electronic shifter. The switching of R / N / D gears is realized by operating the stalk shift handle, and the operation of the P gear is realized by the P - gear button at the end of the stalk shift handle. At the same time, the embodiments of the present invention also provide a shifting system. The stalk shift - type electronic shifter converts the shifting action into an electrical signal and outputs it to the vehicle controller. The vehicle controller provides a working voltage for the stalk shift - type electronic shifter and collects and processes the electrical signals sent by the stalk shift - type electronic shifter. At the same time, the circuits corresponding to P / R / N / D gears all adopt redundant design to improve the functional safety of the vehicle.

[0047] Referring to Figure 1 and Figure 2 , the embodiments of the present invention provide a five - point single - stable stalk shift - type electronic shifter, which includes a housing assembly, a stalk shift operating assembly, a P - gear button assembly, and a main PCB board. Among them, the R\N\D gears are realized by operating the stalk shift operating assembly, and the P gear is realized by pressing the P - gear button assembly.

[0048] As Figure 1 , the housing assembly is composed of an upper housing 1, a middle housing 7, and a lower housing 9 arranged in sequence. The upper housing 1 and the middle housing 7 are connected and fixed through two snap - fit structures and two threaded connections. The upper housing 1 and the middle housing 7 each have blind holes for assembling the metal pin 10, and the blind holes arranged on the upper housing 1 and the middle housing 7 are symmetrically arranged. In addition, the lower housing 9 and the middle housing 7 are fixed through four snap - fit structures. The middle housing 7 provides installation and positioning for the main PCB board 8, and the lower housing 9 is used to press and fix the main PCB board 8 on the middle housing 7. The upper housing 1 and the middle housing 7 jointly enclose a cavity, and an opening communicating with the cavity is provided on one side of the upper housing 1 and the middle housing 7.

[0049] Referring to Figure 3 and Figure 4, the steering column-mounted shift control assembly includes a steering column-mounted shift lever 5, a spring 4, a gear position pin 3, a track body 2, a metal pin 10, and a light shield 6. One end of the steering column-mounted shift lever 5 passes through the opening formed by the upper housing 1 and the middle housing 7 and extends into the cavity. A blind hole is provided at the end of the steering column-mounted shift lever 5 for installing the spring 4 and the gear position pin 3. The track body 2 is fixed on the side wall of the middle housing 7 and is arranged facing the gear position pin 3. Five V-shaped gear position grooves are provided on the side wall of the track body 2 facing the gear position pin 3 (these 5 V-shaped gear position grooves can limit the moving stroke of the steering column-mounted shift lever 5), and ensure that the gear position pin 3 does not stop in a certain V-shaped gear position groove, ensuring that the steering column-mounted shift lever 5 can self-return to the initial position. The five V-shaped gear position grooves respectively correspond to the upper second stage, upper first stage, initial position, lower first stage, and lower second stage positions of the operating stroke of the steering column-mounted electronic shifter. The metal pin 10 is in interference fit with the steering column-mounted shift lever 5 and serves as the rotation axis for the steering column-mounted shift lever 5 to rotate relative to the housing assembly. When the driver operates the steering column-mounted shift lever 5 for shifting, the gear position pin 3 slides on the surface of the track body 2 facing the gear position pin 3, and at the same time also slides axially along the blind hole of the steering column-mounted shift lever 5. The gear position pin 3 compresses the spring 4 to provide the shifting force. The above structure determines the operating performance parameters of the steering column-mounted electronic shifter. The light shield 6 is clamped to the lower side of the steering column-mounted shift lever 5. The light shield 6 is arranged facing the main PCB board 8, and four baffles are provided on the light shield 6. When the steering column-mounted shift lever 5 is operated, the light shield 6 rotates with the steering column-mounted shift lever 5, and the four blocks of the light shield 6 then cut the infrared rays between the emitter and receiver of the main dual-channel grating sensor 17 and the redundant dual-channel grating sensor 18, causing the main dual-channel grating sensor 17 and the redundant dual-channel grating sensor 18 to generate voltage changes, converting the driver's shifting action into an electrical signal. The vehicle controller judges the driver's shifting intention based on the level change and change timing of the received signal.

[0050] Refer to Figure 5 , the P - gear button assembly consists of an FPC board 11, a P - gear button 13, a handle core 14, a conductive rubber 12, and a decorative ring 15. The guiding ribs provided on the outer wall of the P - gear button 13 slide along the guiding grooves provided on the inner wall of the handle core 14. The boss provided on the inner wall of the handle core 14 limits the downward stroke of the P - gear button 13, and the protrusion provided on the inner wall of the handle core 14 limits the upward stroke of the P - gear button 13. The core electrical components of the FPC board 11 are two gold fingers. The conductive rubber 12 can control the on - off of the gold fingers, thereby realizing the on - off of the P - gear circuit on the FPC board 11. The P - gear button 13 transfers the force of pressing the P - gear button 13 to the conductive rubber 12. After the conductive rubber 12 deforms, the conductive particles on its lower surface will conduct the gold fingers on the FPC board 11, thereby realizing the conduction of the P - gear circuit on the FPC board 11. The FPC board 11 then sends a P - gear signal request to the vehicle controller. When the P - gear button 13 is released, the P - gear button 13 resets under the action of the resilience of the conductive rubber 12.

[0051] Reference Figure 6 and Figure 7 Figure 7 , the core electrical components of the main PCB board 8 are two dual-channel grating sensors. The function of the dual-channel grating sensors is to convert the driver's gear-shifting action into a level signal. One of the dual-channel grating sensors plays a major role, and the other dual-channel grating sensor plays a redundant role to ensure that the R / N / D gears meet the functional safety ASIL B.

[0052] For the vehicle controller, the P gear request signal received from the FBC board 11 and the level change signal received from the main PCB board 8 only reflect the driver's gear-shifting intention. Whether the vehicle switches gears also requires the vehicle controller to make a comprehensive determination by combining signals such as the gear-shifting signal, the vehicle speed signal, the door signal, and the brake signal.

[0053] In the embodiment of the present invention, taking the main dual-channel grating sensor as an example, the gear detection principle of the above-mentioned steering-column-mounted electronic shifter is described as follows:

[0054] When the steering-column-mounted shifter handle 5 is manipulated, the four blocks on the light-shielding plate 6 cut the infrared rays between the emitter and the receiver of the main dual-channel grating sensor 17, thereby causing changes in the corresponding levels of CHANNEL1 and CHANNEL2 of the main dual-channel grating sensor 17. Specifically:

[0055] When the steering-column-mounted shifter handle 5 is in the initial position, both CHANNEL1 and CHANNEL2 of the main dual-channel grating sensor 17 are at a low level;

[0056] When the steering-column-mounted shifter handle 5 is switched from the initial position to the previous gear, the corresponding line level changes of CHANNEL1 and CHANNEL2 of the main dual-channel grating sensor 17 are: low level - high level - low level, but the level change of CHANNEL1 is earlier than that of CHANNEL2; the vehicle controller does not respond to the level change when the handle returns;

[0057] When the steering-column-mounted shifter handle 5 is switched from the initial position to the second previous gear, the corresponding line level changes of CHANNEL1 and CHANNEL2 of the main dual-channel grating sensor 17 are: low level - high level - low level - high level - low level, but the level change of CHANNEL1 is earlier than that of CHANNEL2; the vehicle controller does not respond to the level change when the handle returns;

[0058] When the steering-column-mounted shifter handle is switched from the initial position to the next gear, the corresponding line level changes of CHANNEL1 and CHANNEL2 of the main dual-channel grating sensor 17 are: low level - high level - low level, but the level change of CHANNEL1 is later than that of CHANNEL2; the vehicle controller does not respond to the level change when the handle returns;

[0059] When the shift-by-wire handle 5 is switched from the initial position to the second lower gear, the corresponding line levels of CHANNEL1 and CHANNEL2 of the main dual-channel grating sensor 17 change as follows: low level - high level - low level - high level - low level, but the level change of CHANNEL1 lags behind that of CHANNEL2; the vehicle controller does not respond to the level change during the return stroke of the handle.

[0060] In summary, the vehicle controller can determine the operation of the shift-by-wire handle 5, that is, the driver's shifting intention, by collecting the voltage changes and change timing in the level change signals output by CHANNEL1 and CHANNEL2 of the main dual-channel grating sensor 17. CHANNEL3 and CHANNEL4 in the redundant dual-channel grating sensor 08 are used as redundant signals to improve the reliability and safety of the shifting system.

[0061] Refer to Figure 8 , the architecture of traditional electronic shifting includes a shift-by-wire switch assembly, a wiring harness, and a vehicle controller. The shift-by-wire switch assembly consists of a power supply module, a signal acquisition module, a button module, an MCU, an LED module, and a CAN transceiver. The shift-by-wire switch assembly and the vehicle controller communicate with each other through CAN.

[0062] Refer to Figure 9, an embodiment of the present invention further provides a shift system architecture, which consists of a steering column-mounted electronic shifter, a vehicle controller, and a wiring harness. The vehicle controller provides power supply 1 to the steering column-mounted electronic shifter and collects the CHANNE1 (output channel 1) and CHANNEL2 (output channel 2) signals emitted by the main dual-channel grating sensor 17, and realizes the main dual-channel grating circuit loop through GDN1 (I / O signal). At the same time, the vehicle controller provides power supply 2 to the steering column-mounted electronic shifter and collects the CHANNE3 (output channel 3) and CHANNEL4 (output channel 4) signals emitted by the redundant dual-channel grating sensor 18, and realizes the redundant dual-channel grating circuit loop through GDN2 (I / O signal) of the vehicle controller. The above-mentioned main / redundant dual-channel grating sensors are used for the switching of R / N / D gears. Due to the redundant design, the R / N / D gears can meet the ASIL B functional safety target. In addition, the FPC board 11 of the steering column-mounted electronic shifter sends two groups of P gear signals to the vehicle controller. The vehicle controller collects the analog signals of the P gear circuit and forms the P gear circuit loop through GND3 (analog signal). When a failure occurs in the electrical components of the P gear circuit, the specific voltage value output by the P gear circuit will change. For example, when a short circuit or open circuit occurs in the resistor in the P gear circuit, the voltage value output by the P gear circuit is different. The vehicle controller collects the analog signals of the P gear circuit, that is, the vehicle controller collects the specific voltage value output by the P gear circuit. The vehicle controller can judge what kind of failure has occurred in the P gear circuit according to the collected specific voltage value, and thus can achieve the ASIL C functional safety target of the P gear.

[0063] The steering column-mounted electronic shifter provided by the embodiment of the present invention has the advantages of extremely low cost, simple and reliable structure. A shift system provided by the present invention can not only reduce the cost of electrical components of the steering column-mounted electronic shifter, but also directly save the software development cost and functional safety development cost of the steering column-mounted electronic shifter. In particular, the R / N / D gears can achieve the ASIL B functional safety target, and the P gear can achieve the ASIL C functional safety target.

Claims

1. A steering column-mounted electronic shift lever, characterized in that, it includes: a housing assembly, a steering column-mounted shift operating assembly, a P - gear button assembly, and a main PCB board (8); No integrated processing chip is provided on the main PCB board (8). A part of the steering column-mounted shift operating assembly passes through an opening arranged on one side of the housing assembly and extends into its interior. The main PCB board (8) is arranged inside the housing assembly and is located below the part of the steering column-mounted shift operating assembly that extends into the interior of the housing assembly; The P - gear button assembly is arranged on the steering column-mounted shift operating assembly. When the P - gear button assembly is triggered, it sends multiple groups of P - gear request signals to the vehicle controller; Wherein, a main dual-channel grating sensor (17) and a redundant dual-channel grating sensor (18) are arranged on the main PCB board (8). When the steering column-mounted shift operating assembly performs a shift operation, it cuts the infrared rays between the emitter and the receiver of the dual-channel grating sensor and the infrared rays between the emitter and the receiver of the redundant dual-channel grating sensor (18), so that the dual output channels of the dual-channel grating sensor successively output level change signals representing the driver's shift intention to the vehicle controller and the dual output channels of the redundant dual-channel grating sensor (18) successively output level change signals representing the driver's shift intention to the vehicle controller.

2. The steering column-mounted electronic shift lever according to claim 1, characterized in that, the steering column-mounted shift operating assembly includes: a track body (2), which is arranged on the other side of the housing assembly away from the opening; a steering column-mounted shift lever handle (5), one end of which passes through an opening arranged on one side of the housing assembly and extends into the interior of the housing assembly, and the steering column-mounted shift lever handle (5) is rotatably arranged around a metal pin (10) fixed in the housing assembly; a gear position pin (3), which is slidably assembled at one end of the steering column-mounted shift lever handle (5) facing the track body (2); a light-shielding plate (6), which is fixedly assembled on the steering column-mounted shift lever handle (5) and is arranged facing the dual-channel grating sensor; When the steering column-mounted shift lever handle (5) performs a shift operation, the steering column-mounted shift lever handle (5) rotates around the metal pin (10), drives the gear position pin (3) to slide along the track body (2), and drives the light-shielding plate (6) to cut the infrared rays between the emitter and the receiver of the main dual-channel grating sensor (17) and the infrared rays between the emitter and the receiver of the redundant dual-channel grating sensor (18).

3. The steering column-mounted electronic shift lever according to claim 2, characterized in that, the gear position pin (3) slides axially through a spring (4) arranged inside one end of the steering column-mounted shift lever handle (5) facing the track body (2). When the gear position pin (3) slides along the track body (2) with the steering column-mounted shift lever handle (5), the gear position pin (3) is forced by the track body (2) to extend into the steering column-mounted shift lever handle (5) and compress the spring (4). When the steering column-mounted shift lever handle (5) is no longer being shifted, the gear position pin (3) is reset due to the resilience of the spring (4); On one side of the rail body (2) facing the gear shift pin (3), there are a plurality of V-shaped gear slots corresponding one-to-one to the operating stroke of the shifter.

4. The steering column-mounted electronic shifter according to claim 3, characterized in that the housing assembly includes: an upper housing (1), a middle housing (7), and a lower housing (9) that are arranged and fixed in sequence; the upper housing (1) and the middle housing (7) jointly enclose an opening and an internal space for inserting the steering column-mounted shift lever (5), the rail body (2) is fixed on the middle housing (7), and the metal pin (10) is fixed between the upper housing (1) and the lower housing (9); the main PCB board (8) is arranged between the middle housing (7) and the lower housing (9), and is pressed and fixed on the middle housing (7) through the lower housing (9).

5. The steering column-mounted electronic shifter according to claim 2, characterized in that the P gear button assembly includes: a handle core (14) that partially extends into the steering column-mounted shift lever (5); an FPC board (11) for connecting to the vehicle controller, which is arranged inside the handle core (14); a conductive rubber (12) that is arranged inside the handle core (14); a decorative ring (15) that is arranged between the handle core (14) and the steering column-mounted shift lever (5); a P gear button (13) that partially extends into the handle core (14), and when the P gear button (13) is pressed, it triggers the conductive rubber (12) to conduct the FPC board (11), so that the FPC board (11) sends multiple groups of P gear request signals to the vehicle controller; when the P gear button (13) is released, it returns to its original position by the resilience of the conductive rubber (12).

6. The steering column-mounted electronic shifter according to claim 2, characterized in that when the steering column-mounted shift lever (5) is switched from the current gear to the previous gear, the dual output channels of the main dual-channel grating sensor (17) and the dual output channels of the redundant dual-channel grating sensor (18) respectively output level change signals including low level, high level, and low level to the vehicle controller in sequence, and the first output channel in the dual output channels sends the level change signal before the second output channel; when the steering column-mounted shift lever (5) is switched from the current gear to the second previous gear, the dual output channels of the main dual-channel grating sensor (17) and the dual output channels of the redundant dual-channel grating sensor (18) respectively output level change signals including low level, high level, low level, high level, and low level to the vehicle controller in sequence, and the first output channel in the dual output channels sends the level change signal before the second output channel; when the steering column-mounted shift lever (5) is switched from the current gear to the next gear, the dual output channels of the main dual-channel grating sensor (17) and the dual output channels of the redundant dual-channel grating sensor (18) respectively output level change signals including low level, high level, and low level to the vehicle controller in sequence, and the second output channel in the dual output channels sends the level change signal before the first output channel; When the shift-by-wire handle (5) is switched from the current gear position to the next second gear position, the dual output channels of the main dual-channel grating sensor (17) and the dual output channels of the redundant dual-channel grating sensor (18) respectively and sequentially output level change signals including low level, high level, low level, high level, and low level to the vehicle controller, and the second output channel in the dual output channels emits the level change signal prior to the first output channel.

7. The shift-by-wire electronic shifter according to claim 5, wherein, a guide groove is arranged on the inner wall of the handle core (14), and a guide rib assembled into the guide groove is arranged on the outer wall of the P gear button (13); a boss and a protrusion for limiting the moving stroke of the P gear button (13) within the handle core (14) are arranged inside the handle core (14).

8. A shifting system, wherein, it includes the shift-by-wire electronic shifter according to any one of claims 1 to 7, and further includes: a vehicle controller, the vehicle controller is connected to the FPC board (11) in the P gear button assembly for obtaining multiple groups of P gear request signals emitted by the FPC board (11), and the vehicle controller is further connected to the main PCB board (8) for determining the driver's shifting intention based on the level change signals successively emitted by the dual output channels of the main dual-channel grating sensor (17) on the main PCB board (8) and the level change signals successively emitted by the dual output channels of the redundant dual-channel grating sensor (18) on the main PCB board (8).

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